Contact List Groups
Contact List Groups enable you to organize the users on your
Contact List into groups. For more group options, click here.
Make sure that you are in group mode, by clicking on the
Groups   button at the top of your ICQ Window.

To open or close a group or groups on your Contact List:
Double-click on a group name to open or close it.

You have two options to add a new user to a group:
   As you add a user to your Contact List, a User has been added dialog is displayed. Check the Arrange users ... box, to expand the dialog and choose the desired option.
   Double-click on a group to open it. Select a user name and drag and drop that user into the group.